{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{3}{c}}
\toprule
            &\multicolumn{3}{c}{Promoted (Semi-skilled/Operator)}             \\\cmidrule(lr){2-4}
            &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}\\
\midrule
\\hline Mean Dep. Var & .12 & .08 & .2 \\\\ Observations & 585 & 374 & 211 \\\\ \\multicolumn{4}{p{8cm}}{\\tiny \\textit{Notes:} Standard errors clustered at line-section-team level. *** p<0.01, ** p<0.05, * p<0.1.} \\\\ \\end{tabular} }
